Invention Grant
- Patent Title: Toner, developer, and image forming method
- Patent Title (中): 调色剂,显影剂和成像方法
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Application No.: US12248313Application Date: 2008-10-09
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Publication No.: US07947419B2Publication Date: 2011-05-24
- Inventor: Tsuyoshi Sugimoto , Hiroshi Yamashita , Naohiro Watanabe , Shinichi Wakamatsu
- Applicant: Tsuyoshi Sugimoto , Hiroshi Yamashita , Naohiro Watanabe , Shinichi Wakamatsu
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company Limited
- Current Assignee: Ricoh Company Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-263274 20071009
- Main IPC: G03G9/00
- IPC: G03G9/00

Abstract:
A toner including a binder resin including a polyester resin, a colorant, and a release agent including a polyglycerin ester having a melt viscosity of from 1.0 to 40 mPa·sec at 120° C. and a hydroxyl value of from 0 to 100 mgKOH/g is provided. The polyglycerin ester is an ester of a polyglycerin having an average polymerization degree of from 2 to 10 and an aliphatic acid having 16 to 24 carbon atoms in average.
Public/Granted literature
- US20090092917A1 TONER, DEVELOPER, AND IMAGE FORMING METHOD Public/Granted day:2009-04-09
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